This video details the dangers of rip currents and explains how to identify rip currents, as well as how to stay safe. Swimming in Prince Edward Island National Park of Canada is an ideal way to spend a summer day. But before heading into the water make sure that you and your family know how to break the grip of the rip.
Rip currents are powerful, fast-moving seaward currents that can pull even the strongest swimmers out to sea. Be safe. Know how to swim, never swim alone and, when in doubt, don't go out. If you become caught in a rip current, don't fight the current; swim out of the current, then to shore. If you can't escape, float or tread water. If you need help, call or wave for assistance.
Cette vidéo est aussi disponible en français à https://youtu.be/mZUG6d98q-o

published:16 Nov 2011

views:271091

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That helps push water from one side of the world to the other. Without motion in the ocean, there wouldn't be nearly as many different things living in the sea. There would probably be none of us. Currents out in the Ocean make our world the way it.

published:08 Apr 2009

views:530217

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ), a kind of current of very powerful in-depth return which takes with him all which is on its passage. The scene was filmed to Nakalele Point ( Maui) in Hawaii and the diver was not hurt during this experience of dive
www.BreakParadise.com.

published:14 Feb 2013

views:69492

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience.
This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II or ECCO2.. ECCO2 is high resolution model of the global ocean and sea-ice. ECCO2 attempts to model the oceans and sea ice to increasingly accurate resolutions that begin to resolve ocean eddies and other narrow-current systems which transport heat and carbon in the oceans.The ECCO2 model simulates ocean flows at all depths, but only surface flows are used in this visualization. The dark patterns under the ocean represent the undersea bathymetry. Topographic land exaggeration is 20x and bathymetric exaggeration is 40x.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003827/index.html
Like our videos? Subscribe to NASA's GoddardShorts HD podcast:
http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html
Or find NASA Goddard Space Flight Center on Facebook:
http://www.facebook.com/NASA.GSFC
Or find us on Twitter:
http://twitter.com/NASAGoddard

published:29 Mar 2012

views:393800

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►Check out my food channel! http://bit.ly/1hsxh41
★↓FOLLOW ME ON SOCIAL MEDIA!↓★
FacebookShowPage: https://www.facebook.com/beyondsciencetv
Facebook Mike Fan Page: http://on.fb.me/1En9Lue
Instagram: http://instagr.am/Mikexingchen
Twitter: http://twitter.com/Mikexingchen
Vine: https://vine.co/Mikexingchen
Snapchat: Mikeychenx
Periscope: Mikexingchen
Get tickets to the best show on earth!!!
https://www.shenyunperformingarts.org/

published:30 Nov 2016

views:1625468

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

published:13 Nov 2015

views:137969

Light the Ocean: http://channel.nationalgeographic.com/channel/
Undersea mountains cause disruptions in ocean currents that create oceanic paradises on their peaks.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Sea Mounts | National Geographic
https://youtu.be/0NUaxdxt2sE
National Geographic
https://www.youtube.com/natgeo

Saline water covers approximately 72% of the planet's surface (~3.6×108km2) and is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of Earth's surface. The ocean contains 97% of Earth's water, and oceanographers have stated that less than 5% of the World Ocean has been explored. The total volume is approximately 1.35 billion cubic kilometers (320 million cu mi) with an average depth of nearly 3,700 meters (12,100ft).

Riding Currents!

Rip Currents -- The Hidden Danger

This video details the dangers of rip currents and explains how to identify rip currents, as well as how to stay safe. Swimming in Prince Edward Island National Park of Canada is an ideal way to spend a summer day. But before heading into the water make sure that you and your family know how to break the grip of the rip.
Rip currents are powerful, fast-moving seaward currents that can pull even the strongest swimmers out to sea. Be safe. Know how to swim, never swim alone and, when in doubt, don't go out. If you become caught in a rip current, don't fight the current; swim out of the current, then to shore. If you can't escape, float or tread water. If you need help, call or wave for assistance.
Cette vidéo est aussi disponible en français à https://youtu.be/mZUG6d98q-o

2:09

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That helps push water from one side of the world to the other. Without motion in the ocean, there wouldn't be nearly as many different things living in the sea. There would probably be none of us. Currents out in the Ocean make our world the way it.

0:12

Diver taken in an undertow

Diver taken in an undertow

Diver taken in an undertow

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ), a kind of current of very powerful in-depth return which takes with him all which is on its passage. The scene was filmed to Nakalele Point ( Maui) in Hawaii and the diver was not hurt during this experience of dive
www.BreakParadise.com.

1:30:44

Underwater Universe Full HD 1080p, Amazing Documentary

Underwater Universe Full HD 1080p, Amazing Documentary

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

Palau Sudden Current

NASA | Perpetual Ocean

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience.
This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II or ECCO2.. ECCO2 is high resolution model of the global ocean and sea-ice. ECCO2 attempts to model the oceans and sea ice to increasingly accurate resolutions that begin to resolve ocean eddies and other narrow-current systems which transport heat and carbon in the oceans.The ECCO2 model simulates ocean flows at all depths, but only surface flows are used in this visualization. The dark patterns under the ocean represent the undersea bathymetry. Topographic land exaggeration is 20x and bathymetric exaggeration is 40x.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003827/index.html
Like our videos? Subscribe to NASA's GoddardShorts HD podcast:
http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html
Or find NASA Goddard Space Flight Center on Facebook:
http://www.facebook.com/NASA.GSFC
Or find us on Twitter:
http://twitter.com/NASAGoddard

4:12

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►Check out my food channel! http://bit.ly/1hsxh41
★↓FOLLOW ME ON SOCIAL MEDIA!↓★
FacebookShowPage: https://www.facebook.com/beyondsciencetv
Facebook Mike Fan Page: http://on.fb.me/1En9Lue
Instagram: http://instagr.am/Mikexingchen
Twitter: http://twitter.com/Mikexingchen
Vine: https://vine.co/Mikexingchen
Snapchat: Mikeychenx
Periscope: Mikexingchen
Get tickets to the best show on earth!!!
https://www.shenyunperformingarts.org/

52:14

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

2:44

Sea Mounts | National Geographic

Sea Mounts | National Geographic

Sea Mounts | National Geographic

Light the Ocean: http://channel.nationalgeographic.com/channel/
Undersea mountains cause disruptions in ocean currents that create oceanic paradises on their peaks.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Sea Mounts | National Geographic
https://youtu.be/0NUaxdxt2sE
National Geographic
https://www.youtube.com/natgeo

11:50

Most MYSTERIOUS Ocean Facts!

Most MYSTERIOUS Ocean Facts!

Most MYSTERIOUS Ocean Facts!

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured in the deep sea by hydrophones such as the bloop, the train, and julia, to gigantic whirlpools, biggest underwater falls and the milky bioluminescent sea phenomenon. Are deep sea monsters living deep in the ocean?
Subscribe For New Videos! http://goo.gl/UIzLeB
Watch our "12 Historical TreasuresIn The MiddleEast DESTROYED!" video here: https://youtu.be/Nt9mWUpTp1U
Watch our "Most HAUNTED Places In The World!" video here: https://youtu.be/h9elrDhft9w
Watch our "Most DANGEROUS ReligiousCultsEver!" video here: https://youtu.be/VTD1qabI3v0
9. Underwater Falls
Voted one of the most beautiful places on Earth, Mauritius is an island nation in the Indian Ocean. On the Southwestern tip of the island you will find a fascinating illusion. When viewed from above, a runoff of sand and silt deposits creates the impression of an ‘underwater waterfall’.
But did you know there are actually real underwater waterfalls? Seven waterfalls have been discovered deep underwater. The tallest waterfall on Earth is not Angel Falls, but an underwater waterfall called Denmark StraitCataract located in the Atlantic ocean between Greenland and Iceland. It is the world's highest underwater waterfall, with water falling almost 11,500 feet and carries 175 million cubic feet of water per second.
It is caused due to temperature differences in the water on either side of the strait. Cold water is denser than warm water. And the eastern side of the strait is a lot colder than the western side. So when the waters meet, the cold water sinks below the warmer water, creating a strong downward flow, which is considered a waterfall.
And it's not just waterfalls that are under the ocean. There are huge secret rivers, complete with rapids and islands that flow down the sea shelves out into the desert plains creating river banks and flood plains. Here's a picture of the river Cenote Angelita under the sea of Mexico.
These salty rivers carry sediments and minerals and could be vital in sustaining life. The world's sixth largest river, by volume, is below the Black Sea. It is 350 times larger than the Thames and 150 feet deep in places.
8. Milky Sea Phenomenon
For over 400 years, sailors told tales of a mysterious event that takes place far out in the Indian Ocean. They would come across miles and miles of milky glowing waters, sometimes stretching as far as the eye could see. In 2005, a group of scientists led by Dr. Steven Miller of the Naval Research Laboratory in Monterey, Calif., decided to take a closer look at this story to see if it was true. They managed to register about 235 observations and get a satellite image that showed an area of low lighting in the Indian Ocean about the size of Connecticut. Their samples that they collected indicated the presence of a type of bioluminescent bacteria in the water, known as Vibrio harveyi. This isn't the same kind of bacteria that you might see in waves that use their bright light to ward off predators. This bioluminescent bacteria may actually use light to attract fish, since its favorite place to live is inside a fish's gut. Scientists' guess is that since they only emit a very faint light on their own, they have to gather together to make an impact. Their collective glow can grow to massive, milky sea proportions when their numbers swell to a huge amount -- think 40 billion trillion. They may also congregate to colonize algae. Sounds like a party! It is still only a guess since Dr. Miller and his colleagues haven't determined exactly what causes the bacteria to gather.
7. Unexplained sounds
Of course dark, creepy fog can make you jump at anything that goes bump in the night. But what about things that go "bloop" in the sea? With names like "The Bloop," "Train" and "Julia," the sounds have been captured by hydrophones, or underwater microphones, monitored by the National Oceanic and Atmospheric Administration (NOAA). The decidedly nonspooky nicknames for these sounds do little to dispel the mystery surrounding them. In 1997, NOAA hydrophones 3,000 miles apart picked up one of the loudest sounds ever recorded off the southern coast of South America: the Bloop (which sounds exactly like its name, a bloop). The Bloop mimics marine animal sounds in some ways, but if it were some kind of sea creature it would have to be almost the size of the Eiffel tower for that sound to be heard from 3,000 miles away. So what made the sound? It's anyone's guess but deep-sea monsters aside, NOAA holds the most likely explanation for The Bloop is that it was the sound of a large iceberg fracturing. Sure....
Another weird noise known as Julia sounds almost like someone whining or maybe even singing under water. The eastern equatorial Pacific autonomous array (the fancy name for the network of hydrophones) picked up this strange sound that lasted 15 seconds in 1999.

0:56

Massive Underwater Waves Rise Taller Than Skyscrapers

Massive Underwater Waves Rise Taller Than Skyscrapers

Massive Underwater Waves Rise Taller Than Skyscrapers

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as internal waves which can reach more than 600 feet high and travel for more than a thousand miles before breaking under water.
The waves that surfers ride may look impressive, but they’re relatively small compared to the massive internal ones that exist under water.
These below-surface activities can apparently reach more than 600 feet high, travel a distance greater than a thousand miles from the point of origin, and, according to the new study, “give rise to turbulence levels more than 10,000 times that in the open ocean.”
Though internal waves happen in every ocean, scientists focused specifically on the Luzon Strait, an area between Taiwan and the Philippines, because the area is known for its powerful underwater currents.
For a period of seven years, the team tracked the activity using satellites to determine how the waves work and move.
Among the other findings was that the movement is initiated by internal tides and begins as a rolling motion, not a burst of force.
Internal waves can cause large disturbances in the water, affecting the nutrients and temperature for sea life and fishing operations.

Riding Currents!

Rip Currents -- The Hidden Danger

This video details the dangers of rip currents and explains how to identify rip currents, as well as how to stay safe. Swimming in Prince Edward Island National Park of Canada is an ideal way to spend a summer day. But before heading into the water make sure that you and your family know how to break the grip of the rip.
Rip currents are powerful, fast-moving seaward currents that can pull even the strongest swimmers out to sea. Be safe. Know how to swim, never swim alone and, when in doubt, don't go out. If you become caught in a rip current, don't fight the current; swim out of the current, then to shore. If you can't escape, float or tread water. If you need help, call or wave for assistance.
Cette vidéo est aussi disponible en français à https://youtu.be/mZUG6d98q-o

published: 16 Nov 2011

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That helps push water from one side of the world to the other. Without motion in the ocean, there wouldn't be nearly as many different things living in the sea. There would probably be none of us. Currents out in the Ocean make our world the way it.

published: 08 Apr 2009

Diver taken in an undertow

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ), a kind of current of very powerful in-depth return which takes with him all which is on its passage. The scene was filmed to Nakalele Point ( Maui) in Hawaii and the diver was not hurt during this experience of dive
www.BreakParadise.com.

published: 14 Feb 2013

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

published: 12 May 2014

OCEAN GRAVITY - Guillaume Néry / Julie Gautier

OceanGravity is a short film that rewrite the rules of the underwater world and takes us this time into the world of the weightlessness.
Just like in the space, there isn’t anymore a top or a bottom. There isn’t anymore upside down and wrong side out. The ocean becomes cosmos, the man a satellite, and the bottom of the sea an unknown planet. Welcome in the fascinating universe of Ocean Gravity.
Guillaume: «since ever, my diving propels my imagination in the fantasy of the conquest of space. To touch the sea floor or to set foot on an unexplored planet, here are 2 fascinating adventures which feed my thirst of unknown. The discovery of this quite unique place (Tiputa - Rangiroa - French Polynesia), allowed us to put in image the visual closeness of 2 universes water and air, ocean and s...

published: 11 Dec 2014

Ocean Energy - Tidal Current Turbine

Voith Hydro (www.voith.com) developed a turbine for the utilization of tidal currents. Animation produced by Kral GmbH (www.kralgmbh.at).

published: 23 Jun 2009

Palau Sudden Current

NASA | Perpetual Ocean

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience.
This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II or ECCO2.. ECCO2 is high resolution model of the global ocean and sea-ice. ECCO2 attempts to model the oceans and sea ice to increasingly accurate resolutions that begin to resolve ocean eddies and other narrow-current systems which transport heat and carbon in the oceans.The ECCO2 model simulates ocean flows at all depths, but only surface flows are used in this visualization. The dark patterns ...

published: 29 Mar 2012

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►Check out my food channel! http://bit.ly/1hsxh41
★↓FOLLOW ME ON SOCIAL MEDIA!↓★
FacebookShowPage: https://www.facebook.com/beyondsciencetv
Facebook Mike Fan Page: http://on.fb.me/1En9Lue
Instagram: http://instagr.am/Mikexingchen
Twitter: http://twitter.com/Mikexingchen
Vine: https://vine.co/Mikexingchen
Snapchat: Mikeychenx
Periscope: Mikexingchen
Get tickets to the best show on earth!!!
https://www.shenyunperformingarts.org/

published: 30 Nov 2016

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationsh...

published: 13 Nov 2015

Sea Mounts | National Geographic

Light the Ocean: http://channel.nationalgeographic.com/channel/
Undersea mountains cause disruptions in ocean currents that create oceanic paradises on their peaks.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Sea Mounts | National Geographic
https://youtu.be/0NUaxdxt2sE
National Geographic
https://www.youtube.com/nat...

published: 11 Apr 2012

Most MYSTERIOUS Ocean Facts!

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured in the deep sea by hydrophones such as the bloop, the train, and julia, to gigantic whirlpools, biggest underwater falls and the milky bioluminescent sea phenomenon. Are deep sea monsters living deep in the ocean?
Subscribe For New Videos! http://goo.gl/UIzLeB
Watch our "12 Historical TreasuresIn The MiddleEast DESTROYED!" video here: https://youtu.be/Nt9mWUpTp1U
Watch our "Most HAUNTED Places In The World!" video here: https://youtu.be/h9elrDhft9w
Watch our "Most DANGEROUS ReligiousCultsEver!" video here: https://youtu.be/VTD1qabI3v0
9. Underwater Falls
Voted one of the most beautiful places on Earth, Mauritius is an island nation in the Indian Ocean. On the Southwestern tip of the island you...

published: 05 Sep 2016

Massive Underwater Waves Rise Taller Than Skyscrapers

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as internal waves which can reach more than 600 feet high and travel for more than a thousand miles before breaking under water.
The waves that surfers ride may look impressive, but they’re relatively small compared to the massive internal ones that exist under water.
These below-surface activities can apparently reach more than 600 feet high, travel a distance greater than a thousand miles from the point of origin, and, according to the new study, “give rise to turbulence levels more than 10,000 times that in the open ocean.”
Though internal waves happen in every ocean, scientists focused specifically on the Luzon Strait, an area between Taiwan and the Philippines, because the area is known for i...

This video details the dangers of rip currents and explains how to identify rip currents, as well as how to stay safe. Swimming in Prince Edward Island National Park of Canada is an ideal way to spend a summer day. But before heading into the water make sure that you and your family know how to break the grip of the rip.
Rip currents are powerful, fast-moving seaward currents that can pull even the strongest swimmers out to sea. Be safe. Know how to swim, never swim alone and, when in doubt, don't go out. If you become caught in a rip current, don't fight the current; swim out of the current, then to shore. If you can't escape, float or tread water. If you need help, call or wave for assistance.
Cette vidéo est aussi disponible en français à https://youtu.be/mZUG6d98q-o

This video details the dangers of rip currents and explains how to identify rip currents, as well as how to stay safe. Swimming in Prince Edward Island National Park of Canada is an ideal way to spend a summer day. But before heading into the water make sure that you and your family know how to break the grip of the rip.
Rip currents are powerful, fast-moving seaward currents that can pull even the strongest swimmers out to sea. Be safe. Know how to swim, never swim alone and, when in doubt, don't go out. If you become caught in a rip current, don't fight the current; swim out of the current, then to shore. If you can't escape, float or tread water. If you need help, call or wave for assistance.
Cette vidéo est aussi disponible en français à https://youtu.be/mZUG6d98q-o

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That ...

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That helps push water from one side of the world to the other. Without motion in the ocean, there wouldn't be nearly as many different things living in the sea. There would probably be none of us. Currents out in the Ocean make our world the way it.

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That helps push water from one side of the world to the other. Without motion in the ocean, there wouldn't be nearly as many different things living in the sea. There would probably be none of us. Currents out in the Ocean make our world the way it.

Diver taken in an undertow

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ),...

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ), a kind of current of very powerful in-depth return which takes with him all which is on its passage. The scene was filmed to Nakalele Point ( Maui) in Hawaii and the diver was not hurt during this experience of dive
www.BreakParadise.com.

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ), a kind of current of very powerful in-depth return which takes with him all which is on its passage. The scene was filmed to Nakalele Point ( Maui) in Hawaii and the diver was not hurt during this experience of dive
www.BreakParadise.com.

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. Unde...

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

NASA | Perpetual Ocean

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a n...

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience.
This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II or ECCO2.. ECCO2 is high resolution model of the global ocean and sea-ice. ECCO2 attempts to model the oceans and sea ice to increasingly accurate resolutions that begin to resolve ocean eddies and other narrow-current systems which transport heat and carbon in the oceans.The ECCO2 model simulates ocean flows at all depths, but only surface flows are used in this visualization. The dark patterns under the ocean represent the undersea bathymetry. Topographic land exaggeration is 20x and bathymetric exaggeration is 40x.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003827/index.html
Like our videos? Subscribe to NASA's GoddardShorts HD podcast:
http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html
Or find NASA Goddard Space Flight Center on Facebook:
http://www.facebook.com/NASA.GSFC
Or find us on Twitter:
http://twitter.com/NASAGoddard

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience.
This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II or ECCO2.. ECCO2 is high resolution model of the global ocean and sea-ice. ECCO2 attempts to model the oceans and sea ice to increasingly accurate resolutions that begin to resolve ocean eddies and other narrow-current systems which transport heat and carbon in the oceans.The ECCO2 model simulates ocean flows at all depths, but only surface flows are used in this visualization. The dark patterns under the ocean represent the undersea bathymetry. Topographic land exaggeration is 20x and bathymetric exaggeration is 40x.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003827/index.html
Like our videos? Subscribe to NASA's GoddardShorts HD podcast:
http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html
Or find NASA Goddard Space Flight Center on Facebook:
http://www.facebook.com/NASA.GSFC
Or find us on Twitter:
http://twitter.com/NASAGoddard

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►C...

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►Check out my food channel! http://bit.ly/1hsxh41
★↓FOLLOW ME ON SOCIAL MEDIA!↓★
FacebookShowPage: https://www.facebook.com/beyondsciencetv
Facebook Mike Fan Page: http://on.fb.me/1En9Lue
Instagram: http://instagr.am/Mikexingchen
Twitter: http://twitter.com/Mikexingchen
Vine: https://vine.co/Mikexingchen
Snapchat: Mikeychenx
Periscope: Mikexingchen
Get tickets to the best show on earth!!!
https://www.shenyunperformingarts.org/

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►Check out my food channel! http://bit.ly/1hsxh41
★↓FOLLOW ME ON SOCIAL MEDIA!↓★
FacebookShowPage: https://www.facebook.com/beyondsciencetv
Facebook Mike Fan Page: http://on.fb.me/1En9Lue
Instagram: http://instagr.am/Mikexingchen
Twitter: http://twitter.com/Mikexingchen
Vine: https://vine.co/Mikexingchen
Snapchat: Mikeychenx
Periscope: Mikexingchen
Get tickets to the best show on earth!!!
https://www.shenyunperformingarts.org/

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef shark...

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

Light the Ocean: http://channel.nationalgeographic.com/channel/
Undersea mountains cause disruptions in ocean currents that create oceanic paradises on their peaks.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Sea Mounts | National Geographic
https://youtu.be/0NUaxdxt2sE
National Geographic
https://www.youtube.com/natgeo

Light the Ocean: http://channel.nationalgeographic.com/channel/
Undersea mountains cause disruptions in ocean currents that create oceanic paradises on their peaks.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Sea Mounts | National Geographic
https://youtu.be/0NUaxdxt2sE
National Geographic
https://www.youtube.com/natgeo

Most MYSTERIOUS Ocean Facts!

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured in the deep sea by hydrophones such as the bloop, the train, and julia...

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured in the deep sea by hydrophones such as the bloop, the train, and julia, to gigantic whirlpools, biggest underwater falls and the milky bioluminescent sea phenomenon. Are deep sea monsters living deep in the ocean?
Subscribe For New Videos! http://goo.gl/UIzLeB
Watch our "12 Historical TreasuresIn The MiddleEast DESTROYED!" video here: https://youtu.be/Nt9mWUpTp1U
Watch our "Most HAUNTED Places In The World!" video here: https://youtu.be/h9elrDhft9w
Watch our "Most DANGEROUS ReligiousCultsEver!" video here: https://youtu.be/VTD1qabI3v0
9. Underwater Falls
Voted one of the most beautiful places on Earth, Mauritius is an island nation in the Indian Ocean. On the Southwestern tip of the island you will find a fascinating illusion. When viewed from above, a runoff of sand and silt deposits creates the impression of an ‘underwater waterfall’.
But did you know there are actually real underwater waterfalls? Seven waterfalls have been discovered deep underwater. The tallest waterfall on Earth is not Angel Falls, but an underwater waterfall called Denmark StraitCataract located in the Atlantic ocean between Greenland and Iceland. It is the world's highest underwater waterfall, with water falling almost 11,500 feet and carries 175 million cubic feet of water per second.
It is caused due to temperature differences in the water on either side of the strait. Cold water is denser than warm water. And the eastern side of the strait is a lot colder than the western side. So when the waters meet, the cold water sinks below the warmer water, creating a strong downward flow, which is considered a waterfall.
And it's not just waterfalls that are under the ocean. There are huge secret rivers, complete with rapids and islands that flow down the sea shelves out into the desert plains creating river banks and flood plains. Here's a picture of the river Cenote Angelita under the sea of Mexico.
These salty rivers carry sediments and minerals and could be vital in sustaining life. The world's sixth largest river, by volume, is below the Black Sea. It is 350 times larger than the Thames and 150 feet deep in places.
8. Milky Sea Phenomenon
For over 400 years, sailors told tales of a mysterious event that takes place far out in the Indian Ocean. They would come across miles and miles of milky glowing waters, sometimes stretching as far as the eye could see. In 2005, a group of scientists led by Dr. Steven Miller of the Naval Research Laboratory in Monterey, Calif., decided to take a closer look at this story to see if it was true. They managed to register about 235 observations and get a satellite image that showed an area of low lighting in the Indian Ocean about the size of Connecticut. Their samples that they collected indicated the presence of a type of bioluminescent bacteria in the water, known as Vibrio harveyi. This isn't the same kind of bacteria that you might see in waves that use their bright light to ward off predators. This bioluminescent bacteria may actually use light to attract fish, since its favorite place to live is inside a fish's gut. Scientists' guess is that since they only emit a very faint light on their own, they have to gather together to make an impact. Their collective glow can grow to massive, milky sea proportions when their numbers swell to a huge amount -- think 40 billion trillion. They may also congregate to colonize algae. Sounds like a party! It is still only a guess since Dr. Miller and his colleagues haven't determined exactly what causes the bacteria to gather.
7. Unexplained sounds
Of course dark, creepy fog can make you jump at anything that goes bump in the night. But what about things that go "bloop" in the sea? With names like "The Bloop," "Train" and "Julia," the sounds have been captured by hydrophones, or underwater microphones, monitored by the National Oceanic and Atmospheric Administration (NOAA). The decidedly nonspooky nicknames for these sounds do little to dispel the mystery surrounding them. In 1997, NOAA hydrophones 3,000 miles apart picked up one of the loudest sounds ever recorded off the southern coast of South America: the Bloop (which sounds exactly like its name, a bloop). The Bloop mimics marine animal sounds in some ways, but if it were some kind of sea creature it would have to be almost the size of the Eiffel tower for that sound to be heard from 3,000 miles away. So what made the sound? It's anyone's guess but deep-sea monsters aside, NOAA holds the most likely explanation for The Bloop is that it was the sound of a large iceberg fracturing. Sure....
Another weird noise known as Julia sounds almost like someone whining or maybe even singing under water. The eastern equatorial Pacific autonomous array (the fancy name for the network of hydrophones) picked up this strange sound that lasted 15 seconds in 1999.

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured in the deep sea by hydrophones such as the bloop, the train, and julia, to gigantic whirlpools, biggest underwater falls and the milky bioluminescent sea phenomenon. Are deep sea monsters living deep in the ocean?
Subscribe For New Videos! http://goo.gl/UIzLeB
Watch our "12 Historical TreasuresIn The MiddleEast DESTROYED!" video here: https://youtu.be/Nt9mWUpTp1U
Watch our "Most HAUNTED Places In The World!" video here: https://youtu.be/h9elrDhft9w
Watch our "Most DANGEROUS ReligiousCultsEver!" video here: https://youtu.be/VTD1qabI3v0
9. Underwater Falls
Voted one of the most beautiful places on Earth, Mauritius is an island nation in the Indian Ocean. On the Southwestern tip of the island you will find a fascinating illusion. When viewed from above, a runoff of sand and silt deposits creates the impression of an ‘underwater waterfall’.
But did you know there are actually real underwater waterfalls? Seven waterfalls have been discovered deep underwater. The tallest waterfall on Earth is not Angel Falls, but an underwater waterfall called Denmark StraitCataract located in the Atlantic ocean between Greenland and Iceland. It is the world's highest underwater waterfall, with water falling almost 11,500 feet and carries 175 million cubic feet of water per second.
It is caused due to temperature differences in the water on either side of the strait. Cold water is denser than warm water. And the eastern side of the strait is a lot colder than the western side. So when the waters meet, the cold water sinks below the warmer water, creating a strong downward flow, which is considered a waterfall.
And it's not just waterfalls that are under the ocean. There are huge secret rivers, complete with rapids and islands that flow down the sea shelves out into the desert plains creating river banks and flood plains. Here's a picture of the river Cenote Angelita under the sea of Mexico.
These salty rivers carry sediments and minerals and could be vital in sustaining life. The world's sixth largest river, by volume, is below the Black Sea. It is 350 times larger than the Thames and 150 feet deep in places.
8. Milky Sea Phenomenon
For over 400 years, sailors told tales of a mysterious event that takes place far out in the Indian Ocean. They would come across miles and miles of milky glowing waters, sometimes stretching as far as the eye could see. In 2005, a group of scientists led by Dr. Steven Miller of the Naval Research Laboratory in Monterey, Calif., decided to take a closer look at this story to see if it was true. They managed to register about 235 observations and get a satellite image that showed an area of low lighting in the Indian Ocean about the size of Connecticut. Their samples that they collected indicated the presence of a type of bioluminescent bacteria in the water, known as Vibrio harveyi. This isn't the same kind of bacteria that you might see in waves that use their bright light to ward off predators. This bioluminescent bacteria may actually use light to attract fish, since its favorite place to live is inside a fish's gut. Scientists' guess is that since they only emit a very faint light on their own, they have to gather together to make an impact. Their collective glow can grow to massive, milky sea proportions when their numbers swell to a huge amount -- think 40 billion trillion. They may also congregate to colonize algae. Sounds like a party! It is still only a guess since Dr. Miller and his colleagues haven't determined exactly what causes the bacteria to gather.
7. Unexplained sounds
Of course dark, creepy fog can make you jump at anything that goes bump in the night. But what about things that go "bloop" in the sea? With names like "The Bloop," "Train" and "Julia," the sounds have been captured by hydrophones, or underwater microphones, monitored by the National Oceanic and Atmospheric Administration (NOAA). The decidedly nonspooky nicknames for these sounds do little to dispel the mystery surrounding them. In 1997, NOAA hydrophones 3,000 miles apart picked up one of the loudest sounds ever recorded off the southern coast of South America: the Bloop (which sounds exactly like its name, a bloop). The Bloop mimics marine animal sounds in some ways, but if it were some kind of sea creature it would have to be almost the size of the Eiffel tower for that sound to be heard from 3,000 miles away. So what made the sound? It's anyone's guess but deep-sea monsters aside, NOAA holds the most likely explanation for The Bloop is that it was the sound of a large iceberg fracturing. Sure....
Another weird noise known as Julia sounds almost like someone whining or maybe even singing under water. The eastern equatorial Pacific autonomous array (the fancy name for the network of hydrophones) picked up this strange sound that lasted 15 seconds in 1999.

Massive Underwater Waves Rise Taller Than Skyscrapers

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as internal waves which can reach more than 600 feet high and travel for more...

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as internal waves which can reach more than 600 feet high and travel for more than a thousand miles before breaking under water.
The waves that surfers ride may look impressive, but they’re relatively small compared to the massive internal ones that exist under water.
These below-surface activities can apparently reach more than 600 feet high, travel a distance greater than a thousand miles from the point of origin, and, according to the new study, “give rise to turbulence levels more than 10,000 times that in the open ocean.”
Though internal waves happen in every ocean, scientists focused specifically on the Luzon Strait, an area between Taiwan and the Philippines, because the area is known for its powerful underwater currents.
For a period of seven years, the team tracked the activity using satellites to determine how the waves work and move.
Among the other findings was that the movement is initiated by internal tides and begins as a rolling motion, not a burst of force.
Internal waves can cause large disturbances in the water, affecting the nutrients and temperature for sea life and fishing operations.

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as internal waves which can reach more than 600 feet high and travel for more than a thousand miles before breaking under water.
The waves that surfers ride may look impressive, but they’re relatively small compared to the massive internal ones that exist under water.
These below-surface activities can apparently reach more than 600 feet high, travel a distance greater than a thousand miles from the point of origin, and, according to the new study, “give rise to turbulence levels more than 10,000 times that in the open ocean.”
Though internal waves happen in every ocean, scientists focused specifically on the Luzon Strait, an area between Taiwan and the Philippines, because the area is known for its powerful underwater currents.
For a period of seven years, the team tracked the activity using satellites to determine how the waves work and move.
Among the other findings was that the movement is initiated by internal tides and begins as a rolling motion, not a burst of force.
Internal waves can cause large disturbances in the water, affecting the nutrients and temperature for sea life and fishing operations.

Riding Currents!

This is the first installment in my whirlwind tour of Marine Biology101. Enjoy each underwater scene as I talk you through the processes and principles playing out. Through these videos you'll learn about marine biodiversity and the inter-connectedness of ocean habitats. Got any questions? I'd love your comments...
If you don't understand my Aussie accent, switch on the captions / subtitles :)
—JoshJensen, Undersea Productions
The complete DVD has 65 ocean scenes + a bonus feature. It's available via Amazon and Undersea Productions:
http://www.underseaproductions.com/dvds/oceans-natures-aquarium-dvd
http://www.underseaproductions.com/amazon

published: 03 Jun 2014

Ocean Energy - Tidal Current Turbine

Voith Hydro (www.voith.com) developed a turbine for the utilization of tidal currents. Animation produced by Kral GmbH (www.kralgmbh.at).

This is the first installment in my whirlwind tour of Marine Biology101. Enjoy each underwater scene as I talk you through the processes and principles playing...

This is the first installment in my whirlwind tour of Marine Biology101. Enjoy each underwater scene as I talk you through the processes and principles playing out. Through these videos you'll learn about marine biodiversity and the inter-connectedness of ocean habitats. Got any questions? I'd love your comments...
If you don't understand my Aussie accent, switch on the captions / subtitles :)
—JoshJensen, Undersea Productions
The complete DVD has 65 ocean scenes + a bonus feature. It's available via Amazon and Undersea Productions:
http://www.underseaproductions.com/dvds/oceans-natures-aquarium-dvd
http://www.underseaproductions.com/amazon

This is the first installment in my whirlwind tour of Marine Biology101. Enjoy each underwater scene as I talk you through the processes and principles playing out. Through these videos you'll learn about marine biodiversity and the inter-connectedness of ocean habitats. Got any questions? I'd love your comments...
If you don't understand my Aussie accent, switch on the captions / subtitles :)
—JoshJensen, Undersea Productions
The complete DVD has 65 ocean scenes + a bonus feature. It's available via Amazon and Undersea Productions:
http://www.underseaproductions.com/dvds/oceans-natures-aquarium-dvd
http://www.underseaproductions.com/amazon

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

Nine hours of deep sea ambient sound – Let the soothing sounds of the deep lull you to sleep. Perfect for babies! The gurgling, bubbling sounds of the ocean are much like those of the womb.
Also makes a great background for work, study, or writing.
Or pretending you're a mermaid.
NEW – Check out our new version of this soundscape with Whales! Deep Sea WhaleSongs: https://youtu.be/s2zF_-tBV4A
Now Available for download as a one hour MP3!
https://gumroad.com/l/nbjMV#
If you enjoy this video, please consider showing your support by liking, subscribing, sharing, and commenting below. Thanks for listening!
And don't forget to try these other SleepySounds:
Deep Sea Whale Songs: https://youtu.be/s2zF_-tBV4A
Sailing The Sleepy Seas: https://youtu.be/3O4PZE3B2tA
Deep CaveAmbience: https:/...

published: 20 Feb 2015

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationsh...

Mapping The Ocean Floor(full documentary)

Ever wonder what the sea floor looks like? Just ask a NOAA hydrographer (an expert who maps and studies the sea floor) and you will learn that it is very similar to a continent — dotted with plains, mountains, and deep canyons.

CROATIAN: Undersea World Series 2 - Full Series (1to6).

Reveals the beauty and splendor of the gems among the islands – Dugi otok, Rab, Cres, Vis and also includes the Pelješac peninsula.
Chapter 1. Dugi otok
Is the largest island in the Zadar archipelago. Its steep crags look out onto the open sea while the depths below are home to coral, gorgonian, sponges and other miracles of nature that drift inland on the sea currents. Some of the most attractive undersea sites are to be found in the waters off Dugi otok. On land Eleanor’s falcons and mouflons guard the Mir saltwater lake.
Chapter 2. Rab
Diversity is not only to be found on the island but also in its coastal waters: bell towers soar high above steep crags that drop down to sandy beaches and the blue depths where the fields of posidonia guard hidden treasures and secrets such as the ceph...

ExtremeCaveDivers : Documentary on Cave Diving and LostUnderwaterWorlds (Full Documentary).
This is a Great documentary that's very interesting and fun to watch and part of a series of exciting and informative documentaries. This Youtube channel is for learning and educational purposes. Learning and Education are fundamental and important in today's society and becoming increasingly more accessible and convenient online. The availability of important information which is also entertaining helps everyone grow mentally and emotionally as people both individually and as a whole. Documentaries are t...

published: 16 Feb 2016

Winds Currents and the Voyages of Discovery - Perspectives on Ocean Science

Secrets of the Universe Underwater - The Best Documentary Ever!!

UnderwaterUniverse tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Underwater Universe tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Now anyone can explore stunning underwater scenes from their computer, using Google Street View.
THE MYSTERY OF ANTARCTICA | Full HD | Corona Documentarty | ▻▻ SUBSCRIBE FOR NEW .

published: 09 Feb 2017

Garbage Island: An Ocean Full of Plastic (Part 1/3)

Vice sails to the North Pacific Gyre, collecting point for all of the ocean's flotsam and home of the Great Pacific Garbage Patch: a mythical, Texas-sized island made entirely of our trash.
**
Come aboard as we take a cruise to the NorthernGyre in the Pacific Ocean, a spot where currents spin and cycle, churning up tons of plastic into a giant pool of chemical soup, flecked with bits and whole chunks of refuse that cannot biodegrade.
Hosted by Thomas Morton | Originally aired in 2008 on http://VICE.com
FollowThomas on Twitter - http://twitter.com/Babyballs69
Check out more great documentaries here! http://bit.ly/VICE-Documentaries
Watch the rest here!
Part 1/3: http://bit.ly/Garbage-Island-1
Part 2/3: http://bit.ly/Garbage-Island-2
Part 3/3: http://bit.ly/Garbage-Island-3
Subscrib...

published: 06 Sep 2012

3D Ocean Life

Three dimensional video of various marine life scenes. As is true for all videos on this channel, you will need a pair of red/cyan anaglyph glasses to view it in 3D. These can be found on several sites including this one: https://www.rainbowsymphony.com/3d-anaglyph-glasses/

published: 21 Jan 2017

Tsunami

A tsunami , also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.Earthquakes, volcanic eruptions and other underwater explosions , landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.Unlike normal ocean waves which are generated by wind or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water.Tsunami waves do not resemble normal undersea currents or sea waves, because their wavelength is far longer.
---Image-Copyright-and-Permission---
About the author(s): U.S. Navy photo
License: Public domain
---Image-Copyright-and-Permissio...

Ocean Currents

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. Unde...

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef shark...

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

Measuring the GreatestOceanDepthThe Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United StatesCenter for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters. If Mount Everest, the highest mountain on Earth, were placed at this location it would be covered by over one mile of water.
The first depth measurements in the Mariana Trench were made by the British survey ship HMS Challenger, which was used by the Royal Navy in 1875 to conduct research in the trench. The greatest depth that they recorded at that time was 8,184 meters (26,850 feet).
In 1951, another Royal Navy vessel, also named the "HMS Challenger," returned to the area for additional measurements. They discovered an even deeper location with a depth of 10,900 meters (35,760 feet) determined by echo sounding. The Challenger Deep was named after the Royal Navy vessel that made these measurements.
In 2009, sonar mapping done by researchers aboard the RV Kilo Moana, operated by the University of Hawaii, determined the depth to be 10,971 meters (35,994 feet) with a potential error of ± 22 meters. The most recent measurement, done in 2010, is the 10,994 meter ( ± 40 meter accuracy) depth reported at the top of this article, measured by the United States Center for Coastal & Ocean Mapping.

Measuring the GreatestOceanDepthThe Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United StatesCenter for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters. If Mount Everest, the highest mountain on Earth, were placed at this location it would be covered by over one mile of water.
The first depth measurements in the Mariana Trench were made by the British survey ship HMS Challenger, which was used by the Royal Navy in 1875 to conduct research in the trench. The greatest depth that they recorded at that time was 8,184 meters (26,850 feet).
In 1951, another Royal Navy vessel, also named the "HMS Challenger," returned to the area for additional measurements. They discovered an even deeper location with a depth of 10,900 meters (35,760 feet) determined by echo sounding. The Challenger Deep was named after the Royal Navy vessel that made these measurements.
In 2009, sonar mapping done by researchers aboard the RV Kilo Moana, operated by the University of Hawaii, determined the depth to be 10,971 meters (35,994 feet) with a potential error of ± 22 meters. The most recent measurement, done in 2010, is the 10,994 meter ( ± 40 meter accuracy) depth reported at the top of this article, measured by the United States Center for Coastal & Ocean Mapping.

Mapping The Ocean Floor(full documentary)

Ever wonder what the sea floor looks like? Just ask a NOAA hydrographer (an expert who maps and studies the sea floor) and you will learn that it is very simila...

Ever wonder what the sea floor looks like? Just ask a NOAA hydrographer (an expert who maps and studies the sea floor) and you will learn that it is very similar to a continent — dotted with plains, mountains, and deep canyons.

Ever wonder what the sea floor looks like? Just ask a NOAA hydrographer (an expert who maps and studies the sea floor) and you will learn that it is very similar to a continent — dotted with plains, mountains, and deep canyons.

CROATIAN: Undersea World Series 2 - Full Series (1to6).

Reveals the beauty and splendor of the gems among the islands – Dugi otok, Rab, Cres, Vis and also includes the Pelješac peninsula.
Chapter 1. Dugi otok
Is the...

Reveals the beauty and splendor of the gems among the islands – Dugi otok, Rab, Cres, Vis and also includes the Pelješac peninsula.
Chapter 1. Dugi otok
Is the largest island in the Zadar archipelago. Its steep crags look out onto the open sea while the depths below are home to coral, gorgonian, sponges and other miracles of nature that drift inland on the sea currents. Some of the most attractive undersea sites are to be found in the waters off Dugi otok. On land Eleanor’s falcons and mouflons guard the Mir saltwater lake.
Chapter 2. Rab
Diversity is not only to be found on the island but also in its coastal waters: bell towers soar high above steep crags that drop down to sandy beaches and the blue depths where the fields of posidonia guard hidden treasures and secrets such as the cephalopoda, musk octopus, cuttlefish, squid and sepiola.
Chapter 3. Cres
Is an island with a vast number of lakes among which the VranLake is the biggest. In the deep blue depths sea life hides within fields of posidonia. The grass covered seabed is a nursery and haven for numerous sea species making this one of the richest undersea habitats on the Adriatic.
Chapter 4. Pelješac
The peninsula resembles an island as it’s only joined to the mainland by a narrow bridge of land. Its sandy seabed is full of shellfish which were once harvested from the sea but are now also farmed. Mali Ston is famous for its oysters and the peninsula is also famous for its white gold or salt that is harvested in the traditional way.
Chapters 5 and 6. Vis
The island stands like a sentinal guarding the central Adriatic. It has a rich and colourful past. The undersea rocks and crags are teaming for schools of fish. It’s a remote and isolated island with undersea depths guarded by a swarm of crabs in their shells of armour.

Reveals the beauty and splendor of the gems among the islands – Dugi otok, Rab, Cres, Vis and also includes the Pelješac peninsula.
Chapter 1. Dugi otok
Is the largest island in the Zadar archipelago. Its steep crags look out onto the open sea while the depths below are home to coral, gorgonian, sponges and other miracles of nature that drift inland on the sea currents. Some of the most attractive undersea sites are to be found in the waters off Dugi otok. On land Eleanor’s falcons and mouflons guard the Mir saltwater lake.
Chapter 2. Rab
Diversity is not only to be found on the island but also in its coastal waters: bell towers soar high above steep crags that drop down to sandy beaches and the blue depths where the fields of posidonia guard hidden treasures and secrets such as the cephalopoda, musk octopus, cuttlefish, squid and sepiola.
Chapter 3. Cres
Is an island with a vast number of lakes among which the VranLake is the biggest. In the deep blue depths sea life hides within fields of posidonia. The grass covered seabed is a nursery and haven for numerous sea species making this one of the richest undersea habitats on the Adriatic.
Chapter 4. Pelješac
The peninsula resembles an island as it’s only joined to the mainland by a narrow bridge of land. Its sandy seabed is full of shellfish which were once harvested from the sea but are now also farmed. Mali Ston is famous for its oysters and the peninsula is also famous for its white gold or salt that is harvested in the traditional way.
Chapters 5 and 6. Vis
The island stands like a sentinal guarding the central Adriatic. It has a rich and colourful past. The undersea rocks and crags are teaming for schools of fish. It’s a remote and isolated island with undersea depths guarded by a swarm of crabs in their shells of armour.

ExtremeCaveDivers : Documentary on Cave Diving and LostUnderwaterWorlds (Full Documentary).
This is a Great documentary that's very interesting and fun to watch and part of a series of exciting and informative documentaries. This Youtube channel is for learning and educational purposes. Learning and Education are fundamental and important in today's society and becoming increasingly more accessible and convenient online. The availability of important information which is also entertaining helps everyone grow mentally and emotionally as people both individually and as a whole. Documentaries are the resource of choice of the information and internet generations of students around the world. The documentary here along with the other documentaries on this channel relate to important times and people in history, historic places, archaeology, society, world culture, science, conspiracy theories, and education.
The topics covered in these video documentaries vary and cover about everything you could possibly want to know including ancient history, Maya, Rome, Greece, The New World, Egypt, World wars, combat, battles, military and combat technology, current affairs and events, important news, Social Studies, education, biographies, famous people and celerities, politicians, news and current events, Illuminati, Area 51, crime, mafia, serial killers, paranormal, supernatural, cults, government cover-ups, the law and legal matters, corruption, martial arts, sports figures, space, aliens, ufos, conspiracy theories, Annunaki, Nibiru, Nephilim, satanic rituals, religion, christianty, judaism, islam, strange phenomenon, origins of Mankind, Neanderthal, Cro Magnon, Inca, Aztec, Persia, Maya, Indus, Mesopotamia, monsters, mobsters, time travel, Third WorldIssues, planet earth, the Sun, Missions to Mars, The planets, the solar system, the universe, modern physics, String Theory, the Big Bang Theory, Quantum Mechanics, Radio, television, archaeology, science, technology, nature, plants, animals, endangered species, wildlife, animal abuse, environmental concerns and issues, global warming, natural disasters, racism, sexism, LGBT, gay and lesbian issues, and many other educational and controversial topics. Please enjoy and Learn Responsibly!

ExtremeCaveDivers : Documentary on Cave Diving and LostUnderwaterWorlds (Full Documentary).
This is a Great documentary that's very interesting and fun to watch and part of a series of exciting and informative documentaries. This Youtube channel is for learning and educational purposes. Learning and Education are fundamental and important in today's society and becoming increasingly more accessible and convenient online. The availability of important information which is also entertaining helps everyone grow mentally and emotionally as people both individually and as a whole. Documentaries are the resource of choice of the information and internet generations of students around the world. The documentary here along with the other documentaries on this channel relate to important times and people in history, historic places, archaeology, society, world culture, science, conspiracy theories, and education.
The topics covered in these video documentaries vary and cover about everything you could possibly want to know including ancient history, Maya, Rome, Greece, The New World, Egypt, World wars, combat, battles, military and combat technology, current affairs and events, important news, Social Studies, education, biographies, famous people and celerities, politicians, news and current events, Illuminati, Area 51, crime, mafia, serial killers, paranormal, supernatural, cults, government cover-ups, the law and legal matters, corruption, martial arts, sports figures, space, aliens, ufos, conspiracy theories, Annunaki, Nibiru, Nephilim, satanic rituals, religion, christianty, judaism, islam, strange phenomenon, origins of Mankind, Neanderthal, Cro Magnon, Inca, Aztec, Persia, Maya, Indus, Mesopotamia, monsters, mobsters, time travel, Third WorldIssues, planet earth, the Sun, Missions to Mars, The planets, the solar system, the universe, modern physics, String Theory, the Big Bang Theory, Quantum Mechanics, Radio, television, archaeology, science, technology, nature, plants, animals, endangered species, wildlife, animal abuse, environmental concerns and issues, global warming, natural disasters, racism, sexism, LGBT, gay and lesbian issues, and many other educational and controversial topics. Please enjoy and Learn Responsibly!

published:16 Feb 2016

views:73296

back

Winds Currents and the Voyages of Discovery - Perspectives on Ocean Science

UnderwaterUniverse tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Underwater Universe tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Now anyone can explore stunning underwater scenes from their computer, using Google Street View.
THE MYSTERY OF ANTARCTICA | Full HD | Corona Documentarty | ▻▻ SUBSCRIBE FOR NEW .

UnderwaterUniverse tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Underwater Universe tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Now anyone can explore stunning underwater scenes from their computer, using Google Street View.
THE MYSTERY OF ANTARCTICA | Full HD | Corona Documentarty | ▻▻ SUBSCRIBE FOR NEW .

Vice sails to the North Pacific Gyre, collecting point for all of the ocean's flotsam and home of the Great Pacific Garbage Patch: a mythical, Texas-sized island made entirely of our trash.
**
Come aboard as we take a cruise to the NorthernGyre in the Pacific Ocean, a spot where currents spin and cycle, churning up tons of plastic into a giant pool of chemical soup, flecked with bits and whole chunks of refuse that cannot biodegrade.
Hosted by Thomas Morton | Originally aired in 2008 on http://VICE.com
FollowThomas on Twitter - http://twitter.com/Babyballs69
Check out more great documentaries here! http://bit.ly/VICE-Documentaries
Watch the rest here!
Part 1/3: http://bit.ly/Garbage-Island-1
Part 2/3: http://bit.ly/Garbage-Island-2
Part 3/3: http://bit.ly/Garbage-Island-3
Subscribe for new videos everyday: http://bit.ly/Subscribe-to-VICE
Check out our full video catalog: http://www.youtube.com/user/vice/videos
Videos, daily editorial and more: http://vice.com
Like VICE on Facebook: http://fb.com/vice
Follow VICE on Twitter: http://twitter.com/vice
Read our tumblr: http://vicemag.tumblr.com

Vice sails to the North Pacific Gyre, collecting point for all of the ocean's flotsam and home of the Great Pacific Garbage Patch: a mythical, Texas-sized island made entirely of our trash.
**
Come aboard as we take a cruise to the NorthernGyre in the Pacific Ocean, a spot where currents spin and cycle, churning up tons of plastic into a giant pool of chemical soup, flecked with bits and whole chunks of refuse that cannot biodegrade.
Hosted by Thomas Morton | Originally aired in 2008 on http://VICE.com
FollowThomas on Twitter - http://twitter.com/Babyballs69
Check out more great documentaries here! http://bit.ly/VICE-Documentaries
Watch the rest here!
Part 1/3: http://bit.ly/Garbage-Island-1
Part 2/3: http://bit.ly/Garbage-Island-2
Part 3/3: http://bit.ly/Garbage-Island-3
Subscribe for new videos everyday: http://bit.ly/Subscribe-to-VICE
Check out our full video catalog: http://www.youtube.com/user/vice/videos
Videos, daily editorial and more: http://vice.com
Like VICE on Facebook: http://fb.com/vice
Follow VICE on Twitter: http://twitter.com/vice
Read our tumblr: http://vicemag.tumblr.com

3D Ocean Life

Three dimensional video of various marine life scenes. As is true for all videos on this channel, you will need a pair of red/cyan anaglyph glasses to view it i...

Three dimensional video of various marine life scenes. As is true for all videos on this channel, you will need a pair of red/cyan anaglyph glasses to view it in 3D. These can be found on several sites including this one: https://www.rainbowsymphony.com/3d-anaglyph-glasses/

Three dimensional video of various marine life scenes. As is true for all videos on this channel, you will need a pair of red/cyan anaglyph glasses to view it in 3D. These can be found on several sites including this one: https://www.rainbowsymphony.com/3d-anaglyph-glasses/

Tsunami

A tsunami , also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean ...

A tsunami , also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.Earthquakes, volcanic eruptions and other underwater explosions , landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.Unlike normal ocean waves which are generated by wind or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water.Tsunami waves do not resemble normal undersea currents or sea waves, because their wavelength is far longer.
---Image-Copyright-and-Permission---
About the author(s): U.S. Navy photo
License: Public domain
---Image-Copyright-and-Permission---
This channel is dedicated to make Wikipedia, one of the biggest knowledge databases in the world available to people with limited vision.
Article available under a Creative Commons licenseImage source in video

A tsunami , also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.Earthquakes, volcanic eruptions and other underwater explosions , landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.Unlike normal ocean waves which are generated by wind or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water.Tsunami waves do not resemble normal undersea currents or sea waves, because their wavelength is far longer.
---Image-Copyright-and-Permission---
About the author(s): U.S. Navy photo
License: Public domain
---Image-Copyright-and-Permission---
This channel is dedicated to make Wikipedia, one of the biggest knowledge databases in the world available to people with limited vision.
Article available under a Creative Commons licenseImage source in video

Rip Currents -- The Hidden Danger

This video details the dangers of rip currents and explains how to identify rip currents, as well as how to stay safe. Swimming in Prince Edward Island National Park of Canada is an ideal way to spend a summer day. But before heading into the water make sure that you and your family know how to break the grip of the rip.
Rip currents are powerful, fast-moving seaward currents that can pull even the strongest swimmers out to sea. Be safe. Know how to swim, never swim alone and, when in doubt, don't go out. If you become caught in a rip current, don't fight the current; swim out of the current, then to shore. If you can't escape, float or tread water. If you need help, call or wave for assistance.
Cette vidéo est aussi disponible en français à https://youtu.be/mZUG6d98q-o

2:09

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun....

Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density, water's weight, change. That helps push water from one side of the world to the other. Without motion in the ocean, there wouldn't be nearly as many different things living in the sea. There would probably be none of us. Currents out in the Ocean make our world the way it.

0:12

Diver taken in an undertow

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bub...

Diver taken in an undertow

The scuba diver John Hoover was sucked up by a powerful submarine wave in a torrent of bubbles. These current rapids are called a current of tearing (riptide ), a kind of current of very powerful in-depth return which takes with him all which is on its passage. The scene was filmed to Nakalele Point ( Maui) in Hawaii and the diver was not hurt during this experience of dive
www.BreakParadise.com.

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

3:39

OCEAN GRAVITY - Guillaume Néry / Julie Gautier

Ocean Gravity is a short film that rewrite the rules of the underwater world and takes us ...

NASA | Perpetual Ocean

This visualization shows ocean surface currents around the world during the period from June 2005 through Decemeber 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience.
This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II or ECCO2.. ECCO2 is high resolution model of the global ocean and sea-ice. ECCO2 attempts to model the oceans and sea ice to increasingly accurate resolutions that begin to resolve ocean eddies and other narrow-current systems which transport heat and carbon in the oceans.The ECCO2 model simulates ocean flows at all depths, but only surface flows are used in this visualization. The dark patterns under the ocean represent the undersea bathymetry. Topographic land exaggeration is 20x and bathymetric exaggeration is 40x.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003827/index.html
Like our videos? Subscribe to NASA's GoddardShorts HD podcast:
http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html
Or find NASA Goddard Space Flight Center on Facebook:
http://www.facebook.com/NASA.GSFC
Or find us on Twitter:
http://twitter.com/NASAGoddard

4:12

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that ...

Scientists Discover UNDERWATER Lake That KILLS Everything it Touches!

A deadly lake inside the gulf of mexico is so toxic that it kills every sea creature that swims there.
►Subscribe for more videos! http://bit.ly/1Mo6FxX
►Check out my food channel! http://bit.ly/1hsxh41
★↓FOLLOW ME ON SOCIAL MEDIA!↓★
FacebookShowPage: https://www.facebook.com/beyondsciencetv
Facebook Mike Fan Page: http://on.fb.me/1En9Lue
Instagram: http://instagr.am/Mikexingchen
Twitter: http://twitter.com/Mikexingchen
Vine: https://vine.co/Mikexingchen
Snapchat: Mikeychenx
Periscope: Mikexingchen
Get tickets to the best show on earth!!!
https://www.shenyunperformingarts.org/

52:14

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine...

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

Sea Mounts | National Geographic

Light the Ocean: http://channel.nationalgeographic.com/channel/
Undersea mountains cause disruptions in ocean currents that create oceanic paradises on their peaks.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Sea Mounts | National Geographic
https://youtu.be/0NUaxdxt2sE
National Geographic
https://www.youtube.com/natgeo

11:50

Most MYSTERIOUS Ocean Facts!

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured ...

Most MYSTERIOUS Ocean Facts!

Check out these top unexplained mysteries of the deep ocean. From strange sounds captured in the deep sea by hydrophones such as the bloop, the train, and julia, to gigantic whirlpools, biggest underwater falls and the milky bioluminescent sea phenomenon. Are deep sea monsters living deep in the ocean?
Subscribe For New Videos! http://goo.gl/UIzLeB
Watch our "12 Historical TreasuresIn The MiddleEast DESTROYED!" video here: https://youtu.be/Nt9mWUpTp1U
Watch our "Most HAUNTED Places In The World!" video here: https://youtu.be/h9elrDhft9w
Watch our "Most DANGEROUS ReligiousCultsEver!" video here: https://youtu.be/VTD1qabI3v0
9. Underwater Falls
Voted one of the most beautiful places on Earth, Mauritius is an island nation in the Indian Ocean. On the Southwestern tip of the island you will find a fascinating illusion. When viewed from above, a runoff of sand and silt deposits creates the impression of an ‘underwater waterfall’.
But did you know there are actually real underwater waterfalls? Seven waterfalls have been discovered deep underwater. The tallest waterfall on Earth is not Angel Falls, but an underwater waterfall called Denmark StraitCataract located in the Atlantic ocean between Greenland and Iceland. It is the world's highest underwater waterfall, with water falling almost 11,500 feet and carries 175 million cubic feet of water per second.
It is caused due to temperature differences in the water on either side of the strait. Cold water is denser than warm water. And the eastern side of the strait is a lot colder than the western side. So when the waters meet, the cold water sinks below the warmer water, creating a strong downward flow, which is considered a waterfall.
And it's not just waterfalls that are under the ocean. There are huge secret rivers, complete with rapids and islands that flow down the sea shelves out into the desert plains creating river banks and flood plains. Here's a picture of the river Cenote Angelita under the sea of Mexico.
These salty rivers carry sediments and minerals and could be vital in sustaining life. The world's sixth largest river, by volume, is below the Black Sea. It is 350 times larger than the Thames and 150 feet deep in places.
8. Milky Sea Phenomenon
For over 400 years, sailors told tales of a mysterious event that takes place far out in the Indian Ocean. They would come across miles and miles of milky glowing waters, sometimes stretching as far as the eye could see. In 2005, a group of scientists led by Dr. Steven Miller of the Naval Research Laboratory in Monterey, Calif., decided to take a closer look at this story to see if it was true. They managed to register about 235 observations and get a satellite image that showed an area of low lighting in the Indian Ocean about the size of Connecticut. Their samples that they collected indicated the presence of a type of bioluminescent bacteria in the water, known as Vibrio harveyi. This isn't the same kind of bacteria that you might see in waves that use their bright light to ward off predators. This bioluminescent bacteria may actually use light to attract fish, since its favorite place to live is inside a fish's gut. Scientists' guess is that since they only emit a very faint light on their own, they have to gather together to make an impact. Their collective glow can grow to massive, milky sea proportions when their numbers swell to a huge amount -- think 40 billion trillion. They may also congregate to colonize algae. Sounds like a party! It is still only a guess since Dr. Miller and his colleagues haven't determined exactly what causes the bacteria to gather.
7. Unexplained sounds
Of course dark, creepy fog can make you jump at anything that goes bump in the night. But what about things that go "bloop" in the sea? With names like "The Bloop," "Train" and "Julia," the sounds have been captured by hydrophones, or underwater microphones, monitored by the National Oceanic and Atmospheric Administration (NOAA). The decidedly nonspooky nicknames for these sounds do little to dispel the mystery surrounding them. In 1997, NOAA hydrophones 3,000 miles apart picked up one of the loudest sounds ever recorded off the southern coast of South America: the Bloop (which sounds exactly like its name, a bloop). The Bloop mimics marine animal sounds in some ways, but if it were some kind of sea creature it would have to be almost the size of the Eiffel tower for that sound to be heard from 3,000 miles away. So what made the sound? It's anyone's guess but deep-sea monsters aside, NOAA holds the most likely explanation for The Bloop is that it was the sound of a large iceberg fracturing. Sure....
Another weird noise known as Julia sounds almost like someone whining or maybe even singing under water. The eastern equatorial Pacific autonomous array (the fancy name for the network of hydrophones) picked up this strange sound that lasted 15 seconds in 1999.

0:56

Massive Underwater Waves Rise Taller Than Skyscrapers

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as inte...

Massive Underwater Waves Rise Taller Than Skyscrapers

A new study reveals the mechanisms behind the below-surface ocean phenomenon known as internal waves which can reach more than 600 feet high and travel for more than a thousand miles before breaking under water.
The waves that surfers ride may look impressive, but they’re relatively small compared to the massive internal ones that exist under water.
These below-surface activities can apparently reach more than 600 feet high, travel a distance greater than a thousand miles from the point of origin, and, according to the new study, “give rise to turbulence levels more than 10,000 times that in the open ocean.”
Though internal waves happen in every ocean, scientists focused specifically on the Luzon Strait, an area between Taiwan and the Philippines, because the area is known for its powerful underwater currents.
For a period of seven years, the team tracked the activity using satellites to determine how the waves work and move.
Among the other findings was that the movement is initiated by internal tides and begins as a rolling motion, not a burst of force.
Internal waves can cause large disturbances in the water, affecting the nutrients and temperature for sea life and fishing operations.

This is the first installment in my whirlwind tour of Marine Biology101. Enjoy each underwater scene as I talk you through the processes and principles playing out. Through these videos you'll learn about marine biodiversity and the inter-connectedness of ocean habitats. Got any questions? I'd love your comments...
If you don't understand my Aussie accent, switch on the captions / subtitles :)
—JoshJensen, Undersea Productions
The complete DVD has 65 ocean scenes + a bonus feature. It's available via Amazon and Undersea Productions:
http://www.underseaproductions.com/dvds/oceans-natures-aquarium-dvd
http://www.underseaproductions.com/amazon

5:25

Ocean Energy - Tidal Current Turbine

Voith Hydro (www.voith.com) developed a turbine for the utilization of tidal currents. An...

Underwater Universe Full HD 1080p, Amazing Documentary

Throughout history, tidal waves have drowned us, storm surges have sunk cities, and hurricanes and cyclones fueled by the ocean have caused terrible havoc. UnderwaterUniverse tracks the history and evolution of the ocean's seven deadliest zones locations that throughout history have been the direct causes of human devastation by floods, tsunamis, hurricanes, whirlpools, ice, underwater volcanoes, and shipping graveyards.
If you enjoy what you see hit the subscribe button, comment and like.

► Adventure Ocean Quest - 24 Hours on the Reef (FULL Documentary)

Fakarava Atoll is a true underwater paradise that stuns with its sheer diversity of marine life and particularly high populations of manta rays, grey reef sharks and sea turtles. It is one of the only places where big marine animals are found in such dense numbers. Its diversity and richness of wildlife is so unique that Fakarava is now a UNESCO Biosphere Reserve.
But the survival chances of these colourful coral reefs are looking very bleak. They may be the biggest living structures on Earth, but they are dying 4 times more quickly than tropical rainforests. Three quarters of all coral reefs are under threat, and all of them could disappear within the next 50 – 100 years.
Prof. SergePlane from the French research center on Moorea “Criobe” is trying to piece together the interrelationships of coral reef dwellers in order to better understand why they are so sensitive to environmental change, and how they could be protected in the future. This ecosystem is so fragile and sensitive to change that once one link in a coral reef’s chain of life has been removed, it can have dire consequences for the entire reef. Working out how this chain works, and what makes this ecosystem so unique is instrumental to the quest of preserving it.
Prof. Serge Plane has specialised in a very particular aspect of relationships amongst reef organisms: communication. He wants to find out how the animals communicate and how this serves their quest to survive. He has already accumulated a wealth of underwater recordings of sounds in a coral reef. But his normal approach requires him to place hydrophones in strategic static positions across the reef. It is an inefficient, limiting and labour-intensive approach.
Frederic is able to increase the efficiency and success of Prof Serge Plane by approaching animals directly and respond to their behaviours. The scientist’s current recordings do not follow animals during different behaviours, so being able to selectively record behaviours could be an eye-opener for this type of research.
As a noiseless freediver, Frederic is able to trigger certain behaviours and associated sounds by being in the water with the animals without influencing them with cumbersome diving equipment. For example, he is able to record alarm sounds by giving sudden chase to specific fish. So far, it has not been possible for Prof Serge Plane to record behaviour as specific as this because conventional diving gear makes too much noise.
The team dives at every time of day and night at a specific spot on the atoll to observe different species during their own activity cycles, and to see how life on the atoll transforms at different times. But again, Christian and Frederic have to remain cautious and plan their expedition meticulously.
Again, they make the most of local knowledge to prepare themselves for the task in hand. Polynesian mythology is full of marine life – it plays a very important role in local culture. Manta rays, for example, stand for freedom, while sea turtles personify wisdom and long life. Frederic and Christian meet Maitata, a pearldiver from this island. Few people could tell the team more about the local wildlife from the point of view of Polynesian peoples. Once again, the stories this experienced local man has to offer help Christian and Frederic to build a better and more accurate picture of what lurks beneath the waves in this area.
Over their time working, Frederic and Christian repeat their dives on the atoll at different times of day and night. The night-dives can be a bizarre experience with an edge of the otherworldly about it. And the sharply reduced visibility does make these excursions particularly dangerous for Frederic – it would be all too easy to loose orientation and as a result risk his life.
The combination of their observations of the reef at different times of day and night and the recordings of reef sounds prove invaluable to Prof. Serge Planes research. And as he builds up his database of recordings, the interrelationships of coral reef organisms becomes clearer. Frederic and Christian’ observations have allowed fascinating insights into the complex web of connections of this finely tuned ecosystem. Ultimately, it may be this kind of research that could help to preserve the world’s coral reefs well into the future.

44:54

Deepest Part of The Oceans - Full Documentary HD

Measuring the Greatest Ocean Depth
The Challenger Deep in the Mariana Trench is the deepes...

Deepest Part of The Oceans - Full Documentary HD

Measuring the GreatestOceanDepthThe Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United StatesCenter for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters. If Mount Everest, the highest mountain on Earth, were placed at this location it would be covered by over one mile of water.
The first depth measurements in the Mariana Trench were made by the British survey ship HMS Challenger, which was used by the Royal Navy in 1875 to conduct research in the trench. The greatest depth that they recorded at that time was 8,184 meters (26,850 feet).
In 1951, another Royal Navy vessel, also named the "HMS Challenger," returned to the area for additional measurements. They discovered an even deeper location with a depth of 10,900 meters (35,760 feet) determined by echo sounding. The Challenger Deep was named after the Royal Navy vessel that made these measurements.
In 2009, sonar mapping done by researchers aboard the RV Kilo Moana, operated by the University of Hawaii, determined the depth to be 10,971 meters (35,994 feet) with a potential error of ± 22 meters. The most recent measurement, done in 2010, is the 10,994 meter ( ± 40 meter accuracy) depth reported at the top of this article, measured by the United States Center for Coastal & Ocean Mapping.

Mapping The Ocean Floor(full documentary)

Ever wonder what the sea floor looks like? Just ask a NOAA hydrographer (an expert who maps and studies the sea floor) and you will learn that it is very similar to a continent — dotted with plains, mountains, and deep canyons.

CROATIAN: Undersea World Series 2 - Full Series (1to6).

Reveals the beauty and splendor of the gems among the islands – Dugi otok, Rab, Cres, Vis and also includes the Pelješac peninsula.
Chapter 1. Dugi otok
Is the largest island in the Zadar archipelago. Its steep crags look out onto the open sea while the depths below are home to coral, gorgonian, sponges and other miracles of nature that drift inland on the sea currents. Some of the most attractive undersea sites are to be found in the waters off Dugi otok. On land Eleanor’s falcons and mouflons guard the Mir saltwater lake.
Chapter 2. Rab
Diversity is not only to be found on the island but also in its coastal waters: bell towers soar high above steep crags that drop down to sandy beaches and the blue depths where the fields of posidonia guard hidden treasures and secrets such as the cephalopoda, musk octopus, cuttlefish, squid and sepiola.
Chapter 3. Cres
Is an island with a vast number of lakes among which the VranLake is the biggest. In the deep blue depths sea life hides within fields of posidonia. The grass covered seabed is a nursery and haven for numerous sea species making this one of the richest undersea habitats on the Adriatic.
Chapter 4. Pelješac
The peninsula resembles an island as it’s only joined to the mainland by a narrow bridge of land. Its sandy seabed is full of shellfish which were once harvested from the sea but are now also farmed. Mali Ston is famous for its oysters and the peninsula is also famous for its white gold or salt that is harvested in the traditional way.
Chapters 5 and 6. Vis
The island stands like a sentinal guarding the central Adriatic. It has a rich and colourful past. The undersea rocks and crags are teaming for schools of fish. It’s a remote and isolated island with undersea depths guarded by a swarm of crabs in their shells of armour.

ExtremeCaveDivers : Documentary on Cave Diving and LostUnderwaterWorlds (Full Documentary).
This is a Great documentary that's very interesting and fun to watch and part of a series of exciting and informative documentaries. This Youtube channel is for learning and educational purposes. Learning and Education are fundamental and important in today's society and becoming increasingly more accessible and convenient online. The availability of important information which is also entertaining helps everyone grow mentally and emotionally as people both individually and as a whole. Documentaries are the resource of choice of the information and internet generations of students around the world. The documentary here along with the other documentaries on this channel relate to important times and people in history, historic places, archaeology, society, world culture, science, conspiracy theories, and education.
The topics covered in these video documentaries vary and cover about everything you could possibly want to know including ancient history, Maya, Rome, Greece, The New World, Egypt, World wars, combat, battles, military and combat technology, current affairs and events, important news, Social Studies, education, biographies, famous people and celerities, politicians, news and current events, Illuminati, Area 51, crime, mafia, serial killers, paranormal, supernatural, cults, government cover-ups, the law and legal matters, corruption, martial arts, sports figures, space, aliens, ufos, conspiracy theories, Annunaki, Nibiru, Nephilim, satanic rituals, religion, christianty, judaism, islam, strange phenomenon, origins of Mankind, Neanderthal, Cro Magnon, Inca, Aztec, Persia, Maya, Indus, Mesopotamia, monsters, mobsters, time travel, Third WorldIssues, planet earth, the Sun, Missions to Mars, The planets, the solar system, the universe, modern physics, String Theory, the Big Bang Theory, Quantum Mechanics, Radio, television, archaeology, science, technology, nature, plants, animals, endangered species, wildlife, animal abuse, environmental concerns and issues, global warming, natural disasters, racism, sexism, LGBT, gay and lesbian issues, and many other educational and controversial topics. Please enjoy and Learn Responsibly!

51:16

Winds Currents and the Voyages of Discovery - Perspectives on Ocean Science

Modern oceanography has been built on a legacy of centuries of seagoing dating back to anc...

Secrets of the Universe Underwater - The Best Documentary Ever!!

UnderwaterUniverse tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Underwater Universe tracks the history and evolution of the Ocean's seven deadliest zones.locations that throughout history have been the direct cause of .
Now anyone can explore stunning underwater scenes from their computer, using Google Street View.
THE MYSTERY OF ANTARCTICA | Full HD | Corona Documentarty | ▻▻ SUBSCRIBE FOR NEW .

20:48

Garbage Island: An Ocean Full of Plastic (Part 1/3)

Vice sails to the North Pacific Gyre, collecting point for all of the ocean's flotsam and ...

Garbage Island: An Ocean Full of Plastic (Part 1/3)

Vice sails to the North Pacific Gyre, collecting point for all of the ocean's flotsam and home of the Great Pacific Garbage Patch: a mythical, Texas-sized island made entirely of our trash.
**
Come aboard as we take a cruise to the NorthernGyre in the Pacific Ocean, a spot where currents spin and cycle, churning up tons of plastic into a giant pool of chemical soup, flecked with bits and whole chunks of refuse that cannot biodegrade.
Hosted by Thomas Morton | Originally aired in 2008 on http://VICE.com
FollowThomas on Twitter - http://twitter.com/Babyballs69
Check out more great documentaries here! http://bit.ly/VICE-Documentaries
Watch the rest here!
Part 1/3: http://bit.ly/Garbage-Island-1
Part 2/3: http://bit.ly/Garbage-Island-2
Part 3/3: http://bit.ly/Garbage-Island-3
Subscribe for new videos everyday: http://bit.ly/Subscribe-to-VICE
Check out our full video catalog: http://www.youtube.com/user/vice/videos
Videos, daily editorial and more: http://vice.com
Like VICE on Facebook: http://fb.com/vice
Follow VICE on Twitter: http://twitter.com/vice
Read our tumblr: http://vicemag.tumblr.com

27:55

3D Ocean Life

Three dimensional video of various marine life scenes. As is true for all videos on this c...

3D Ocean Life

Three dimensional video of various marine life scenes. As is true for all videos on this channel, you will need a pair of red/cyan anaglyph glasses to view it in 3D. These can be found on several sites including this one: https://www.rainbowsymphony.com/3d-anaglyph-glasses/

30:15

Tsunami

A tsunami , also known as a seismic sea wave, is a series of waves in a water body caused ...

Tsunami

A tsunami , also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.Earthquakes, volcanic eruptions and other underwater explosions , landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.Unlike normal ocean waves which are generated by wind or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water.Tsunami waves do not resemble normal undersea currents or sea waves, because their wavelength is far longer.
---Image-Copyright-and-Permission---
About the author(s): U.S. Navy photo
License: Public domain
---Image-Copyright-and-Permission---
This channel is dedicated to make Wikipedia, one of the biggest knowledge databases in the world available to people with limited vision.
Article available under a Creative Commons licenseImage source in video

Garbage Island: An Ocean Full of Plastic (Part 1/3...

3D Ocean Life...

Tsunami...

Ocean Currents...

Stephen Hawking was working right up until his death last week on his final work – A SmoothExit from EternalInflation – which is currently being reviewed by a leading scientific journal. &nbsp;. According to reports, the work predicts that the universe would eventually end when stars run out of energy ... ....

Article by WN.Com Correspondent Dallas DarlingIt wasn’t very long ago Republicans were accusing Democrats of either paying a few dollars to the homeless for votes or giving them a pack of cigarettes. But with Donald Trump, it’s obvious he paid $130,000 to an adult-film star in exchange for her silence last October and just before the general election ... Was the payment from his own account – or from a lawyer – or from campaign donations....

Using e-cigarettes may lead to an accumulation of fat in the liver, a study of mice exposed to the devices suggests. “The popularity of electronic cigarettes has been rapidly increasing in part because of advertisements that they are safer than conventional cigarettes ... Friedman of Charles R. Drew University of Medicine and Science in Los Angeles, California ... Circadian rhythm dysfunction is known to accelerate liver disease....

According to AndroidPolice, the original Pixel XL attempts to pull up to 40 percent more current than possible from the charger, setting a dangerous precedent. The smartphone repeatedly enters and leaves a charging state as the charger shuts off due to over current protection ... If the USB Type-C PD charger does not have over current protection then it could be fatal for the consumer....

With the December quarter current account deficit worsening to 2 per cent of GDP, Bank of America Merrill Lynch (BofAML) raised its current account deficit (CAD) forecast for this financial year and for the next fiscal ...India's current account deficit is expected to be around 1.7 per cent of GDP in this financial year, largely owing to higher oil prices, says a report....

China's 34th Antarctic scientific expedition team obtained full-depth cross-sectional data of the core areas in the Antarctic Circumpolar Current on Mar ...The research team completed full-depth cross-sectional observation of the westerlies regarding temperature, salinity of sea waters and ocean currents, and carried out a series of operations such as trawl for sampling marine organisms....

Current Charges ...Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges ... Current Charges....

The company currently sells a range of vehicles from hatchback to SUVs playing in about 70 per cent of the market in India... With the addition of new products and enhanced play in the segment, the company would be able to ramp up its market share, which currently stands at around 7 per cent, he added ... Currently, Tata Motors offers only Tigor with electric powertrain in passenger vehicles segment....

India's current account deficit is expected to be around 1.7 per cent of GDP in this financial year, largely owing to higher oil prices, says a report. With the December quarter current account deficit worsening to 2 per cent of GDP, Bank of America Merrill Lynch (BofAML) raised its ......

Compared with last year’s corresponding figure of Rs10,797.739bn, the current week’s figure was higher by 11.62pc ...Current week’s figure is higher by 11.62pc compared to last year’s corresponding figure of Rs14,941.672bn ... Compared with last year’s corresponding figure of Rs5502.819bn, current week’s figure is higher by 20.71pc ... Compared to last year’s corresponding figure of Rs2,025.840bn, current week’s figure is higher by 16.68pc....

Further, the weekly relative strength index or the RSI level at 37 continued to slip from last week’s level coupled with weak cues on MACD at current trend ... The developing concerns over political play coupled with the widening of India’s current account deficit are likely to keep index under pressure ... Further, a reasonable RSI at the current level and sustain volume breakout in the last session supports a short-term uptrend....

Despite that growth rate of 7.5pc in production of cotton as it has gone up to 11.4 million bales in the current fiscal year, Pakistan’s overall growth rate is going to miss its desired target of 6pc and will touch GDP growth rate of 5.5pc for 2017-18. “The cotton production has gone up from 10.6 million bales in last fiscal year 2016-17 to 11.4 million bales in the current fiscal year 2017-18, indicating a growth of 7.5pc....

Schold is currently in South Africa as part of a study abroad program and Guyot-Sionnest was traveling back to the University from a mock trial tournament ... “protecting students affected by the current political climate,” reducing “interpersonal and institutional harm on campus” and demanding “increased accountability and response as well as proactiveness from the administration on student concerns.”....